President Donald Trump signed a series of executive orders advancing the construction of the Keystone XL and Dakota Access oil pipelines Tuesday morning, despite the U.S. Army Corps of Engineerings turning down DAPL project permits last December. Among the orders signed were a notice requiring pipeline materials to be made in the United States, as well as a measure accelerating the pipeline permit application process. (Published Tuesday, Jan. 24, 2017)

The Twitter account for the Badlands National Park in South Dakota published a series of tweets Tuesday on climate change. A few hours later, the tweets were deleted.

The first tweet, posted an hour after President Donald Trump signed executive orders advancing the construction of the controversial Keystone XL and Dakota Access oil pipelines, said: “The pre-industrial concentration of carbon dioxide in the atmosphere was 280 parts per million (ppm). As of December 2016, 404.93 ppm.”

Just moments later, the account posted another tweet: “Today, the amount of carbon dioxide in the atmosphere is higher than at any time in the last 650,000 years” — with the hashtag “#climate” added for good measure.

According to a National Park Service spokesman, the tweets were posted by a former employee who is not authorized to use the park's account. Tom Crosson, NPS's chief of public affairs, told NBC the park was not told to remove the tweets but "chose to do so when they realized that their account had been compromised."

"At this time, National Park Service social media managers are encouraged to continue the use of Twitter to post information relating to public safety and park information, with the exception of content related to national policy issues," Crosson added.

Tweeting about climate change isn't out of character for Badlands. The park's Twitter account feed addresses the national security implications of climate change, rising water temperatures and the decline of species driven by global warming. But it does contradict President Trump's stance on the issue. He has repeatedly claimed climate change is a hoax.

In response to the tweets being deleted, DNC national press secretary Adrienne Watson released the following statement: “Vladimir Putin would be proud.”

Tuesday's tweets followed a brief suspension Friday of the National Park Service’s Twitter account, as well as those of all its bureaus, over retweets the Department of the Interior deemed "inconsistent with the agency’s mission."

The prohibition came after the National Park Service’s official Twitter account, a bureau of the department, retweeted a pair of posts to its 315,000 followers. One of the tweets was a photo that compared the crowd gathered on the National Mall for Trump to the much-larger gathering that stood in the same spot eight years earlier for President Barack Obama's first swearing-in. The tweets were later removed from the feed, and the National Park Service apologized for sharing them.